Particle ID for neutrino interaction measurements using information from the ECal of the T2K near detector

ND 280电磁量能器（ECal）提供了关于进入它的带电粒子的广泛信息，例如在探测器内中微子和反中微子相互作用中产生的带电粒子。不同的粒子在ECal中具有不同的签名，因此该信息可用于补充由ND 280时间投影室提供的基于dE/dx的粒子ID。这是特别有用的测量罕见的中微子相互作用类型的统计是有限的，高选择效率需要实现而不牺牲纯度。测量这些反应类型有助于我们理解中微子-核相互作用，并有助于限制T2 K中微子振荡实验的系统误差。该项目旨在开发基于ECal的μ子，带电π子和质子的粒子ID工具。然后，这些PID工具将用于对反μ CC 1 mu 1 pi 1 p相互作用进行微分截面测量，其中μ子-反中微子与原子核相互作用产生反μ子，负π介子和质子。

The ND280 electromagnetic calorimeter (ECal) provides extensive information about charged particles that enter it, such as those produced in neutrino and antineutrino interactions within the detector. Different particles have different signatures in the ECal, so this information can be used to supplement the dE/dx-based particle ID provided by the ND280 time projection chambers. This is particularly useful for measurements of rarer neutrino interaction types where statistics are limited and high selection efficiency needs to be achieved without sacrificing purity. Measuring these reaction types contributes to our understanding of neutrino-nucleus interactions, and helps to constrain systematic errors for the T2K neutrino oscillation experiment. This project aims to develop ECal-based particle ID tools for muons, charged pions and protons. These PID tools will then be used to perform a differential cross-section measurement for antinumu CC1mu1pi1p interactions, where a muon-antineutrino interacts with a nucleus to produce an antimuon, a negative pion and a proton.